Correct Answer - Option 1 : less than third
Concept used:
Properties of the triangle
A triangle has three sides, three angles, and three vertices.
The sum of all internal angles of a triangle is always equal to 180°. This is called the angle sum property of a triangle.
The sum of the length of any two sides of a triangle is greater than the length of the third side.
The side opposite to the largest angle of a triangle is the largest side.
Any exterior angle of the triangle is equal to the sum of its interior opposite angles. This is called the exterior angle property of a triangle.
The difference between the lengths of any two sides of a triangle is less than the length of the third side
From the above properties we can say that,
Option 1 is correct